/* 粘一粘 IT 服务站 v2.1 设计系统（六页多页版，零外部依赖，含移动端适配与反馈组件） */
:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-soft: #eff4ff;
  --ink: #0f172a;
  --text: #334155;
  --muted: #64748b;
  --faint: #94a3b8;
  --bg: #f5f7fb;
  --card: #ffffff;
  --border: #e2e8f0;
  --ok: #059669;
  --ok-soft: #ecfdf5;
  --warn: #d97706;
  --warn-soft: #fffbeb;
  --plan: #64748b;
  --plan-soft: #f1f5f9;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .05), 0 4px 14px rgba(15, 23, 42, .05);
  --shadow-lift: 0 2px 4px rgba(15, 23, 42, .06), 0 10px 26px rgba(15, 23, 42, .10);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", "微软雅黑", "PingFang SC", sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.7; font-size: 15px;
}
a { color: var(--primary); }
code {
  background: #eef2f7; border: 1px solid var(--border); border-radius: 5px;
  padding: 1px 6px; font-size: .88em; font-family: Consolas, "Courier New", monospace;
  color: #be185d;
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1080px; margin: 0 auto; padding: 10px 20px;
  display: flex; align-items: center; gap: 18px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); flex-shrink: 0; }
.brand-logo {
  width: 34px; height: 34px; border-radius: 9px; color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
  display: flex; align-items: center; justify-content: center;
}
.brand-logo svg { width: 18px; height: 18px; }
.brand-name { font-weight: 700; font-size: 16px; letter-spacing: .5px; white-space: nowrap; }
.topnav {
  display: flex; gap: 2px; margin-left: auto;
  overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none;
}
.topnav::-webkit-scrollbar { display: none; }
.topnav a {
  color: var(--muted); text-decoration: none; font-size: 14px;
  padding: 7px 11px; border-radius: 8px; white-space: nowrap; flex-shrink: 0;
}
.topnav a:hover { color: var(--primary); background: var(--primary-soft); }
.topnav a.on { color: var(--primary); background: var(--primary-soft); font-weight: 700; }

/* ---------- 主视觉 ---------- */
.hero {
  background:
    radial-gradient(700px 260px at 85% -40%, rgba(124, 58, 237, .35), transparent 70%),
    radial-gradient(600px 240px at 12% 130%, rgba(37, 99, 235, .4), transparent 70%),
    linear-gradient(135deg, #0b1b3a 0%, #14306b 100%);
  color: #fff; padding: 52px 20px 58px; text-align: center;
}
.hero.hero-mini { padding: 34px 20px 40px; }
.hero h1 { font-size: 30px; font-weight: 800; letter-spacing: 1px; }
.hero.hero-mini h1 { font-size: 24px; }
.hero p { margin-top: 10px; color: #b6c4e2; font-size: 15px; }
.announce {
  max-width: 760px; margin: 22px auto 0; padding: 10px 18px;
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 999px; font-size: 13.5px; color: #e3ebff;
  display: none; align-items: center; gap: 8px; justify-content: center;
}
.announce.on { display: flex; }
.announce .dot { width: 7px; height: 7px; border-radius: 50%; background: #4ade80; flex-shrink: 0; }

/* 首页大搜索 */
.bigsearch { max-width: 620px; margin: 26px auto 0; position: relative; }
.bigsearch .bs-box { position: relative; }
.bigsearch .bs-box > svg {
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; color: #93a5c8;
}
.bigsearch input {
  width: 100%; padding: 14px 18px 14px 44px; font-size: 15px; color: var(--ink);
  border: none; border-radius: 999px; outline: none;
  box-shadow: 0 4px 20px rgba(0, 0, 0, .25);
}
.bigsearch input::placeholder { color: var(--faint); }
.bs-drop {
  position: absolute; left: 0; right: 0; top: calc(100% + 8px); z-index: 40;
  background: #fff; border-radius: 14px; box-shadow: 0 12px 40px rgba(2, 8, 30, .3);
  text-align: left; overflow: hidden; display: none; max-height: 420px; overflow-y: auto;
}
.bs-drop.on { display: block; }
.bs-group { padding: 8px 0; }
.bs-group + .bs-group { border-top: 1px solid var(--border); }
.bs-gtitle {
  display: flex; justify-content: space-between; align-items: center;
  padding: 4px 16px; font-size: 12px; color: var(--faint); font-weight: 700;
}
.bs-gtitle a { font-weight: 400; text-decoration: none; font-size: 12px; }
.bs-item {
  display: flex; align-items: center; gap: 10px; padding: 8px 16px;
  color: var(--text); text-decoration: none; font-size: 14px;
}
.bs-item:hover { background: var(--primary-soft); }
.bs-item svg { width: 15px; height: 15px; color: var(--faint); flex-shrink: 0; }
.bs-item b { color: var(--ink); font-weight: 600; }
.bs-item span { color: var(--muted); font-size: 12.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bs-none { padding: 18px 16px; color: var(--muted); font-size: 13.5px; text-align: center; }

/* ---------- 布局 ---------- */
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
section { margin-top: 44px; scroll-margin-top: 76px; }
.sec-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 6px; flex-wrap: wrap; }
.sec-head h2 { font-size: 21px; color: var(--ink); font-weight: 800; display: flex; align-items: center; gap: 8px; }
.sec-head h2 svg { width: 19px; height: 19px; color: var(--primary); }
.sec-head .sec-sub { color: var(--muted); font-size: 13px; }
.sec-more { margin-left: auto; font-size: 13px; text-decoration: none; white-space: nowrap; }
.sec-legend { color: var(--muted); font-size: 13px; margin-bottom: 16px; }

/* ---------- 五大场景大卡（首页） ---------- */
.scene-grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px;
  margin-top: -34px; position: relative; z-index: 5;
}
.scene-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px 14px 16px; text-align: center; text-decoration: none; color: var(--ink);
  box-shadow: var(--shadow); transition: transform .16s, box-shadow .16s, border-color .16s;
  display: flex; flex-direction: column; align-items: center; gap: 8px; min-height: 128px;
}
.scene-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); border-color: #c7d6f8; }
.scene-icon {
  width: 46px; height: 46px; border-radius: 13px; display: flex; align-items: center; justify-content: center;
}
.scene-icon svg { width: 23px; height: 23px; }
.scene-card b { font-size: 14.5px; }
.scene-card span { font-size: 12px; color: var(--muted); line-height: 1.5; }

/* ---------- 快捷入口卡片（通用） ---------- */
.quick-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; }
.quick-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 14px; text-align: center; text-decoration: none; color: var(--ink);
  box-shadow: var(--shadow); transition: transform .16s, box-shadow .16s, border-color .16s;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.quick-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); border-color: #c7d6f8; }
.quick-icon {
  width: 44px; height: 44px; border-radius: 12px; background: var(--primary-soft);
  color: var(--primary); display: flex; align-items: center; justify-content: center;
}
.quick-icon svg { width: 22px; height: 22px; }
.quick-card b { font-size: 14px; }
.quick-card span { font-size: 12px; color: var(--muted); line-height: 1.5; }

/* ---------- 页内搜索条（导航/软件/故障页） ---------- */
.page-search { position: relative; margin-bottom: 18px; max-width: 480px; }
.page-search svg {
  position: absolute; left: 13px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; color: var(--faint);
}
.page-search input {
  width: 100%; padding: 10px 14px 10px 38px; font-size: 14px;
  border: 1px solid var(--border); border-radius: 999px; background: var(--card);
  outline: none; transition: border .15s, box-shadow .15s; color: var(--ink);
}
.page-search input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .15); }

/* ---------- 导航页 ---------- */
.nav-cat { margin-top: 30px; }
.nav-cat-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.nav-cat-head svg { width: 19px; height: 19px; color: var(--primary); }
.nav-cat-head h2 { font-size: 17px; color: var(--ink); font-weight: 800; }
.nav-cat-head .cnt { color: var(--faint); font-size: 12.5px; }
.nav-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(158px, 1fr)); gap: 12px; }
.nav-card {
  position: relative; background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 12px; text-decoration: none; color: var(--ink);
  display: flex; align-items: flex-start; gap: 10px;
  transition: transform .14s, box-shadow .14s, border-color .14s;
}
.nav-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lift); border-color: #c7d6f8; }
.nav-ico {
  width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0;
  background: var(--primary-soft); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
}
.nav-ico svg { width: 18px; height: 18px; }
.nav-card .nc-name { font-weight: 700; font-size: 13.5px; line-height: 1.4; display: flex; align-items: center; gap: 5px; flex-wrap: wrap; }
.nav-card .nc-desc {
  font-size: 12px; color: var(--muted); line-height: 1.45; margin-top: 2px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.hot {
  background: #fef2f2; color: #dc2626; font-size: 10.5px; font-weight: 700;
  padding: 0 6px; border-radius: 5px; line-height: 1.7; flex-shrink: 0;
}

/* ---------- 故障自救 ---------- */
.fix-cats {
  display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px;
  position: sticky; top: 56px; z-index: 30; background: var(--bg); padding: 10px 0;
}
.fix-list { display: grid; gap: 12px; }
.fix-cat-title { display: flex; align-items: center; gap: 8px; margin: 20px 0 2px; }
.fix-cat-title svg { width: 17px; height: 17px; color: var(--warn); }
.fix-cat-title h3 { font-size: 15.5px; color: var(--ink); font-weight: 800; }
.fix-cat-title .cnt { color: var(--faint); font-size: 12.5px; font-weight: 400; }
.fix {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: box-shadow .16s;
}
.fix:hover { box-shadow: var(--shadow); }
.fix summary {
  cursor: pointer; list-style: none; padding: 15px 20px;
  display: flex; align-items: center; gap: 12px; font-weight: 600; color: var(--ink); font-size: 15px;
}
.fix summary::-webkit-details-marker { display: none; }
.fix summary .fx-ico {
  width: 32px; height: 32px; border-radius: 9px; background: var(--warn-soft);
  color: var(--warn); display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.fix summary .fx-ico svg { width: 16px; height: 16px; }
.fix summary .fx-title { flex: 1; min-width: 0; }
.fix summary .chev { color: var(--faint); transition: transform .18s; flex-shrink: 0; }
.fix[open] summary .chev { transform: rotate(180deg); }
.fix .fix-body { padding: 2px 22px 18px 64px; }
.fix .fix-body ol { padding-left: 20px; }
.fix .fix-body li { margin: 6px 0; font-size: 14px; }
.fix .fix-body li::marker { color: var(--primary); font-weight: 700; }
.step-media { margin: 10px 0 4px; }
.step-media img, .step-media video {
  max-width: 100%; border-radius: 10px; border: 1px solid var(--border);
  display: block; background: #000;
}
.step-media figcaption { font-size: 12.5px; color: var(--muted); margin-top: 6px; }
.media-link {
  display: inline-flex; align-items: center; gap: 7px; margin-top: 8px;
  background: var(--primary-soft); color: var(--primary-dark); text-decoration: none;
  border: 1px solid #c7d6f8; border-radius: 9px; padding: 7px 14px; font-size: 13px; font-weight: 600;
}
.media-link:hover { background: #e0ebff; }
.media-link svg { width: 14px; height: 14px; }

/* ---------- 软件库 ---------- */
.lib-toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 16px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--border); background: var(--card); color: var(--muted);
  border-radius: 999px; padding: 6px 14px; font-size: 13px; cursor: pointer;
  transition: all .14s; user-select: none; min-height: 32px;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.on { background: var(--primary); border-color: var(--primary); color: #fff; }
.lib-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 14px; }
.sw-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; display: flex; flex-direction: column; gap: 10px;
  transition: box-shadow .16s, transform .16s;
}
.sw-card:hover { box-shadow: var(--shadow-lift); transform: translateY(-2px); }
.sw-card.dim { opacity: .62; }
.sw-top { display: flex; align-items: flex-start; gap: 10px; }
.sw-ico {
  width: 38px; height: 38px; border-radius: 10px; flex-shrink: 0;
  background: var(--primary-soft); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
}
.sw-ico svg { width: 19px; height: 19px; }
.sw-name { font-weight: 700; color: var(--ink); font-size: 14.5px; line-height: 1.45; }
.sw-badges { margin-top: 4px; display: flex; flex-wrap: wrap; gap: 6px; }
.badge { font-size: 11.5px; padding: 1.5px 9px; border-radius: 999px; font-weight: 600; }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.official { background: var(--primary-soft); color: var(--primary); }
.badge.plan { background: var(--plan-soft); color: var(--plan); }
.badge.tag { background: #f5f3ff; color: #7c3aed; }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.sw-note { font-size: 13px; color: var(--muted); }
.sw-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: 6px; text-decoration: none;
  font-size: 13px; font-weight: 600; border-radius: 9px; padding: 8px 15px;
  transition: all .14s; border: 1px solid transparent; cursor: pointer; background: none;
  min-height: 34px; font-family: inherit;
}
.btn svg { width: 14px; height: 14px; }
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.ghost { background: #fff; color: var(--primary); border-color: #c7d6f8; }
.btn.ghost:hover { background: var(--primary-soft); }
.lib-grid .sec-head { align-items: center; }
.lib-grid .sec-head h2 { display: flex; align-items: center; gap: 8px; font-size: 16px; }
.lib-grid .sec-head .sec-ico { width: 17px; height: 17px; color: var(--primary); }
.lib-empty { padding: 40px 0; text-align: center; color: var(--muted); display: none; }
.lib-request {
  margin-top: 16px; padding: 14px 20px; border: 1px dashed #c7d6f8; border-radius: var(--radius);
  background: var(--primary-soft); color: var(--primary-dark); font-size: 13.5px;
}

/* 条目级反馈小按钮 */
.fb-mini {
  border: none; background: none; color: var(--faint); font-size: 12px; cursor: pointer;
  padding: 4px 8px; border-radius: 6px; display: inline-flex; align-items: center; gap: 4px;
  font-family: inherit; flex-shrink: 0;
}
.fb-mini svg { width: 12px; height: 12px; }
.fb-mini:hover { color: var(--primary); background: var(--primary-soft); }

/* ---------- 面板（新人/帮助） ---------- */
.panel {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 26px; box-shadow: var(--shadow);
}
.panel + .panel { margin-top: 14px; }
.panel h3 { color: var(--ink); font-size: 15.5px; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.panel h3 svg { width: 17px; height: 17px; color: var(--primary); }
.panel p, .panel li { font-size: 14px; }
.panel ol, .panel ul { padding-left: 22px; }
.panel li { margin: 7px 0; }
.panel li::marker { color: var(--primary); font-weight: 700; }
.motto {
  display: inline-block; background: linear-gradient(120deg, var(--primary-soft), #f5f3ff);
  border: 1px solid #dbe7ff; color: var(--primary-dark); font-weight: 700;
  padding: 6px 16px; border-radius: 999px; font-size: 14px; margin-bottom: 12px;
}
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.help-cta {
  margin-top: 14px; display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary); color: #fff !important; text-decoration: none;
  padding: 10px 22px; border-radius: 10px; font-weight: 700; font-size: 14px;
  white-space: nowrap;
}
.help-cta:hover { background: var(--primary-dark); }

/* ---------- 反馈组件 ---------- */
.fb-fab {
  position: fixed; right: 18px; bottom: 18px; z-index: 90;
  display: inline-flex; align-items: center; gap: 7px;
  background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%); color: #fff;
  border: none; border-radius: 999px; padding: 12px 18px; font-size: 14px; font-weight: 700;
  cursor: pointer; box-shadow: 0 6px 22px rgba(37, 99, 235, .45);
  transition: transform .15s, box-shadow .15s; font-family: inherit;
}
.fb-fab svg { width: 17px; height: 17px; }
.fb-fab:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(37, 99, 235, .55); }
.fb-mask {
  position: fixed; inset: 0; z-index: 95; background: rgba(15, 23, 42, .45);
  display: none; align-items: flex-end; justify-content: center; padding: 0;
}
.fb-mask.on { display: flex; }
.fb-modal {
  background: #fff; width: 100%; max-width: 480px; max-height: 88vh; overflow-y: auto;
  border-radius: 18px 18px 0 0; padding: 20px 22px 26px;
  animation: fb-up .2s ease-out;
}
@keyframes fb-up { from { transform: translateY(30px); opacity: .4; } to { transform: none; opacity: 1; } }
.fb-modal h3 { color: var(--ink); font-size: 16px; display: flex; align-items: center; gap: 8px; }
.fb-modal h3 svg { width: 17px; height: 17px; color: var(--primary); }
.fb-modal .fb-where { font-size: 12.5px; color: var(--faint); margin: 4px 0 12px; word-break: break-all; }
.fb-types { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.fb-types .chip { min-height: 34px; }
.fb-modal textarea {
  width: 100%; min-height: 110px; resize: vertical; font-family: inherit; font-size: 14px;
  border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; outline: none;
  color: var(--ink); line-height: 1.6;
}
.fb-modal textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }
.fb-modal input[type="text"] {
  width: 100%; margin-top: 10px; font-family: inherit; font-size: 13.5px;
  border: 1px solid var(--border); border-radius: 10px; padding: 9px 12px; outline: none; color: var(--ink);
}
.fb-modal input[type="text"]:focus { border-color: var(--primary); }
.fb-actions { display: flex; gap: 10px; margin-top: 14px; align-items: center; }
.fb-submit { flex: 1; justify-content: center; }
.fb-cancel { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 13.5px; padding: 8px 12px; font-family: inherit; }
.fb-cancel:hover { color: var(--ink); }
.fb-err { color: #dc2626; font-size: 12.5px; margin-top: 8px; display: none; }
.fb-toast {
  position: fixed; left: 50%; bottom: 84px; transform: translateX(-50%) translateY(20px);
  z-index: 99; background: var(--ink); color: #fff; font-size: 13.5px;
  padding: 10px 20px; border-radius: 999px; opacity: 0; pointer-events: none;
  transition: opacity .2s, transform .2s; max-width: 86vw; text-align: center;
}
.fb-toast.on { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 页脚 ---------- */
footer {
  margin-top: 60px; border-top: 1px solid var(--border); background: var(--card);
  padding: 26px 20px 34px; text-align: center; color: var(--muted); font-size: 12.5px;
}
footer .f-links { margin-top: 6px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
footer a { color: var(--faint); text-decoration: none; }
footer a:hover { color: var(--primary); }

/* ---------- 响应式：平板 ---------- */
@media (max-width: 860px) {
  .scene-grid { grid-template-columns: repeat(3, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .hero h1 { font-size: 25px; }
  .fix .fix-body { padding-left: 22px; }
}

/* ---------- 响应式：手机 ---------- */
@media (max-width: 560px) {
  body { font-size: 14.5px; }
  .topbar-inner { padding: 8px 12px; gap: 10px; }
  .brand-name { font-size: 15px; }
  .topnav a { padding: 7px 9px; font-size: 13.5px; }
  .hero { padding: 38px 16px 46px; }
  .hero.hero-mini { padding: 26px 16px 32px; }
  .hero h1 { font-size: 22px; }
  .hero.hero-mini h1 { font-size: 20px; }
  .hero p { font-size: 13.5px; }
  .wrap { padding: 0 14px; }
  section { margin-top: 34px; }
  .scene-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: -26px; }
  .scene-card { min-height: 112px; padding: 16px 10px 12px; }
  .quick-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .nav-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .nav-card { flex-direction: column; gap: 8px; padding: 12px 10px; }
  .lib-grid { grid-template-columns: 1fr; }
  .fix summary { padding: 13px 14px; font-size: 14px; gap: 10px; }
  .fix .fix-body { padding: 2px 16px 16px 16px; }
  .fix-cats { top: 52px; flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .fix-cats .chip { flex-shrink: 0; }
  .panel { padding: 18px 16px; }
  .fb-fab { right: 14px; bottom: 14px; padding: 11px 16px; }
  .bigsearch input { font-size: 14px; padding: 12px 16px 12px 42px; }
}

/* ===== 暗色模式（2026-09-10 第一百零五轮，老板拍板） ===== */
[data-theme="dark"] {
  --primary: #6d9bff;
  --primary-dark: #8fb3ff;
  --primary-soft: #16233f;
  --ink: #e8edf7;
  --text: #c3cbdd;
  --muted: #8d99b4;
  --faint: #6b7793;
  --bg: #0d1420;
  --card: #151e2e;
  --border: #26334a;
  --ok: #34d399;
  --ok-soft: #0d2b20;
  --warn: #fbbf24;
  --warn-soft: #2d2408;
  --plan: #94a3b8;
  --plan-soft: #1d2839;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 14px rgba(0, 0, 0, .35);
  --shadow-lift: 0 2px 4px rgba(0, 0, 0, .35), 0 10px 26px rgba(0, 0, 0, .45);
}
[data-theme="dark"] .topbar { background: rgba(13, 20, 32, .86); }
[data-theme="dark"] code { background: #1d2839; }
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select { background: #101827; color: var(--text); border-color: var(--border); }
[data-theme="dark"] input::placeholder { color: var(--faint); }

/* 主题切换按钮 */
.theme-toggle {
  display: inline-flex; align-items: center; gap: 5px;
  height: 30px; padding: 0 10px; border-radius: 15px; cursor: pointer;
  border: 1px solid var(--border); background: var(--card); color: var(--muted);
  font-size: 12px; line-height: 1; transition: all .15s; flex-shrink: 0;
}
.theme-toggle:hover { color: var(--primary); border-color: var(--primary); }
.theme-toggle svg { width: 14px; height: 14px; }
@media (max-width: 720px) { .theme-toggle-label { display: none; } .theme-toggle { padding: 0 8px; } }